Which WCAG success criterion requires that all non-text content has a text alternative, and how can Selenium verify this?
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A
WCAG 1.1.1 โ check alt attributes on img elements via getAttribute('alt')
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B
WCAG 2.4.1 โ check aria-label on all interactive elements
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C
WCAG 1.3.1 โ check role attributes on semantic elements
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D
WCAG 3.1.1 โ check lang attribute on the html element